Eighty-Eight Royale FWD V6-3.8L VIN K (1996)
Air Door Actuator / Motor: All Technical Service Bulletins
A/C Defrost Valve - Creak Noise When Changing Modes
File In Section: 1 - HVAC
Bulletin No.: 63-11-08
Date: May, 1996
Subject:
A/C Defrost Valve "Creak" Noise when Changing Modes (Lubricate A/C Defrost Valve Shaft with Silicone Grease)
Models:
1996
Buick Park Avenue
1996-97
Buick LeSabre
1996
Cadillac Concours, DeVille, Eldorado, Seville
1996
Oldsmobile Eighty Eight, Ninety Eight
1996
Pontiac Bonneville
Built Prior to February 2, 1996
Condition
Some owners may comment on a "creak" noise from the A/C defrost valve when changing HVAC modes.
Correction
1.
Remove left side sound insulator.
2.
Lubricate A/C defrost valve shaft with silicone grease.
3.
Operate A/C mode valve to verify "creak" noise is suppressed or eliminated.
4.
Reinstall left side sound insulator.
Warranty Information
For vehicles repaired under warranty, use:
Labor
Operation
Description
Labor Time
Actuator Vacuum
0.3 hr
D1787
Diaphragm - Replace
